Definitions
1.NounOne thing, one being, one item.
2.NounA group of entities or items treated as one entity.
3.NounAn ultimate atom, or simple, unextended point; something ultimate and indivisible.
4.NounA single individual (such as a pollen grain) that is free from others, not united in a group.
5.NounA single-celled organism. (See Monas.)
6.NounA monoid object in the category of endofunctors of a fixed category.
7.NounA data type which represents a specific form of computation, along with the operations "return" and "bind".